Modelling and Simulating Automated Vehicular Functions in Critical Situations—Application of a Novel Accident Reconstruction Concept

Lengyel, Henrietta; Shaiykbekova, Maral; Kerebekov, Sherkhan; Szalay, Zsolt; Török, Árpád

doi:10.3390/vehicles5010015

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…An analysis of the state of traffic safety in the world in general [1] and in Ukraine in particular [2] indicates the need for an urgent solution to the problems of accidents. A significant number of road traffic accidents occur due to insufficient active safety of vehicles, which is significantly determined by the efficiency of the vehicle braking system [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Research of the vacuum brake booster working process

Sklyarov,

Shapovalov,

Chernenko

et al. 2024

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The creation of a laboratory installation was carried out with an aim to ensure the study of the working processes and characteristics of vacuum boosters as a part of hydraulic brake drives for vehicles with a gross weight of up to 3.5 tons for civilian usage, and armored vehicles with a gross weight of up to 8.5 tons designated for service and combat missions. Theoretical researches in this direction have been previously carried out by a number of scientists of the Department of “Automobiles” named after prof. Gredeskul A.B. in Kharkiv National Automobile and Road University, the results of which have been highlighted in a number of scientific papers. Comparison of the results of theoretical studies with the experimental ones, received on the laboratory setup and suggested in this paper, according to the experimental method described in the article, using the created electronic signal processing complex and sensor unit, made it possible to establish a discrepancy between theoretical and experimental studies within 6%. This complex for experimental research was created for the first time, thus allowing to obtain the results that confirm the theoretical studies of the vacuum boosters of the brake drive of cars, as well as revealed a number of dependencies between the weight and overall parameters of the under research unit, along with the number of functional relationships between the structural components of the vacuum boosters, which enables to significantly optimize its design.

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Section: Introductionmentioning

confidence: 99%

Research of the vacuum brake booster working process

Sklyarov,

Shapovalov,

Chernenko

et al. 2024

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“…Subsequently, the comprehensive documentation compiled by the police is handed over to the accident reconstructionist, a forensic expert well-versed in discerning the accident process. The accident reconstructionist employs specialized software programs to simulate the accident process [6]. The reconstructed representation of the accident serves as one of the most important pillars of the legal procedure aiming to establish liability for the accident.…”

Section: Introductionmentioning

confidence: 99%

Analysis of UAV Flight Patterns for Road Accident Site Investigation

Vida,

Melegh,

Süveges

et al. 2023

Vehicles

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Unmanned Aerial Vehicles (UAVs) offer a promising solution for road accident scene documentation. This study seeks to investigate the occurrence of systematic deformations, such as bowling and doming, in the 3D point cloud and orthomosaic generated from images captured by UAVs along an horizontal road segment, while exploring how adjustments in flight patterns can rectify these errors. Four consumer-grade UAVs were deployed, all flying at an altitude of 10 m while acquiring images along two different routes. Processing solely nadir images resulted in significant deformations in the outputs. However, when additional images from a circular flight around a designated Point of Interest (POI), captured with an oblique camera axis, were incorporated into the dataset, these errors were notably reduced. The resulting measurement errors remained within the 0–5 cm range, well below the customary error margins in accident reconstruction. Remarkably, the entire procedure was completed within 15 min, which is half the estimated minimum duration for scene investigation. This approach demonstrates the potential for UAVs to efficiently record road accident sites for official documentation, obviating the need for pre-established Ground Control Points (GCP) or the adoption of Real-Time Kinematic (RTK) drones or Post Processed Kinematic (PPK) technology.

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Estimating the effectiveness of electric vehicles braking when determining the circumstances of a traffic accident

Kashkanov,

Semenov,

Kashkanova

et al. 2023

Sci Rep

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In the vast majority of cases, the braking process is used to prevent traffic accidents. The effectiveness of this process depends on the design and functionality of vehicle braking systems (presence of anti-lock braking system, emergency braking system, preventive safety systems, etc.) and is limited by the amount of frictional forces in contact of tires with the road. The improvement of methodical approaches to evaluating the effectiveness of braking of cars contributes to increasing the accuracy and objectivity of establishing the circumstances of the occurrence of emergency situations. The paper analyses existing methods of evaluating the braking parameters of vehicles (including those with an electric drive) and modern methods of evaluating electric vehicle braking parameters and conducting auto-technical investigations of traffic accidents, which relate to using different methodological approaches and digital technologies at all stages of expert research. In contrast to existing models, the proposed mathematical model for estimating the trajectory of two-axle cars during braking allows for considering various types of input parameter uncertainty, reducing the range of possible modeling errors by 39%. Comparing simulation results and experimental data showed that the average relative error is 4.58%, and the maximum error did not exceed 7.82%. The performed study of the stability of the electric vehicles' movement during emergency braking with the help of developed mathematical models in the Mathcad software environment reveals the content of the algorithm of a similar calculation in specialized computer programs of auto technical examination. Conducting such calculations is relevant in the analysis of real accident situations, where specific circumstances and features that cannot be considered during modeling in specialized software must be taken into account. Simultaneously, the probability of type I errors is reduced by 2–19%, and type II errors are reduced by 43–68%.

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Modelling and Simulating Automated Vehicular Functions in Critical Situations—Application of a Novel Accident Reconstruction Concept

Cited by 3 publications

References 27 publications

Research of the vacuum brake booster working process

Research of the vacuum brake booster working process

Analysis of UAV Flight Patterns for Road Accident Site Investigation

Estimating the effectiveness of electric vehicles braking when determining the circumstances of a traffic accident

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